Air Asia Flight 8501 lost contact with air traffic control in Indonesia at 7:24 (23:24 GMT), Malaysia-based AirAsia tweeted.
The missing jet had been due to arrive in Singapore at 8:30 (00:30 GMT).
There were 155 passengers on board, with 138 adults, 16 children and 1 infant. Also on board were 2 pilots and 5 cabin crew.
Passengers were mostly Indonesians, 3 South Koreans, and one each from France, Malaysia, and Singapore.
AirAsia Indonesia regrets to confirm that QZ8501 from Surabaya to Singapore has lost contact at 07:24hrs this morning http://t.co/WomRQuzcPO
— AirAsia (@airasia) December 28, 2014
At this time, ongoing search and rescue operations are being conducted under the guidance of The Indonesia of Civil Aviation Authority (CAA) and guaranteed that all parties will be informed as soon as more information becomes available. On the other hand, AirAsia Indonesia is cooperating fully and assisting the investigation in every possible way, according to the updated statement released by the airline this Sunday.
The aircraft submitted flight plan route and was requesting deviation (due to bad weather) to the Indonesian Air Traffic Control (ATC) before it lost its communication, the company said.
The aircraft had undergone its last scheduled maintenance on 16 November 2014.
AirAsia open up Emergency Call Centre available for family or friends of those who may have been on board. The number is: +622129850801.
AirAsia will release updated information as it will be posted on the AirAsia website, www.airasia.com.
UPDATE: 40 Bodies recovered from Missing Plane Search
Debri and 40 bodies have been discovered in the waters off the Borneo, Indonesian Navy says.
No official confirmation that the remains come from the missing AirAsia Flight QZ8501.
After three days of intense searching, the official sighted a floating object that appears like an emergency exit of the plane, Search and Operation Head Bambang Sulistyo said.
The rescuers were continuing to recover bodies. Official sent other search teams racing to the area where the debri was found, says CNN. He was 95% certain that the objects found at 160km (100 miles) south-west of Pangkalan Bun in Borneo’s Central Kalimantan province were parts of the plane.
Relatives in tears as recovered bodies shown on TV. Families of the passengers grieved and howled loudly as they watched a video of a helicopter lowering a diver to get a ceased body.
https://twitter.com/tonyfernandes/status/549840195579703296
AirAsia CEO Tony Fernandes tweeted and now rushing to Surabaya.